Licking paws

 The momma here asking for some advice. Matilda has always had allergy issues. She sees a doggie dermatologist and is on special allergy meds. Lately she's been licking her paws almost constantly. They're red, but I don't know if something's making them red and that's why she's licking them or if they're red because she's licking them. Now she's licked one so much it has raw spots and she's started limping on it. I'm kind of at my wit's end of what to do, and to top it off I have to leave her at boarding tomorrow night because I'm going on vacation. (Absolutely can't reschedule) Any suggestions for a frazzled momma??